Influence of amylopectin content and grain size distribution on physicochemical properties of cassava starch films: casting process.

PAULA GONZÁLEZ SELIGRA; LUCÍA FAMÁ; SILVIA GOYANES

Congreso; VII International Conference on Composite Materials; 2018

Thermoplastic films based on mix of native cassava starch (TPS) and amylopectin rich starch (AP) with, initially, nano and micro size distribution (TPS:AP = 100:0 (TPS), 75:25 (TPS-AP25) , 50:50 (TPS-AP50) and 0:100 (TPSAP-100)) were developed by casting. XRD revealed higher crystallinity in films with AP. Increments in Young´s modulus in TPS-AP25 and TPS-A50 indicated reinforcement effect of the amount of AP with nanometer size. TPS-AP100 showed same modulus that TPS due to the higher amylopectin content by AP.